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Grade 27 Titanium vs. N08904 Stainless Steel

Grade 27 titanium belongs to the titanium alloys classification, while N08904 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 27
38
Fatigue Strength, MPa 170
200
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
79
Shear Strength, MPa 180
370
Tensile Strength: Ultimate (UTS), MPa 270
540
Tensile Strength: Yield (Proof), MPa 230
240

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1390
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 8.7
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
32
Density, g/cm3 4.5
8.1
Embodied Carbon, kg CO2/kg material 33
5.8
Embodied Energy, MJ/kg 530
79
Embodied Water, L/kg 320
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
170
Resilience: Unit (Modulus of Resilience), kJ/m3 240
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 8.8
3.1
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.020
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0
1.0 to 2.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
38.8 to 53
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
23 to 28
Nitrogen (N), % 0 to 0.030
0 to 0.1
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.045
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0